On Tuesday, 27 June 2017 at 17:55:02 UTC, Iain Buclaw wrote:
Looks like it would be best to apply these PRs in the order
listed:
https://github.com/dlang/dmd/pull/5276
https://github.com/dlang/dmd/pull/5948
https://github.com/dlang/dmd/pull/6418
Compiling https://github.com/JinShil/stm32f42_discovery_demo
GDC 7.1 Without https://github.com/D-Programming-GDC/GDC/pull/507
-----------------------------------------------------------------
time arm-none-eabi-gdc -c -O3 -nophoboslib -nostdinc
-nodefaultlibs -nostdlib -fno-emit-moduleinfo -mthumb
-mcpu=cortex-m4 -Isource/runtime -fno-bounds-check
-fno-invariants -fno-in -fno-out -ffunction-sections
-fdata-sections source/gcc/attribute.d source/board/package.d
source/board/ILI9341.d source/board/lcd.d source/board/spi5.d
source/board/statusLED.d source/board/random.d
source/board/ltdc.d source/stm32f42/bus.d source/stm32f42/scb.d
source/stm32f42/trace.d source/stm32f42/dma2d.d
source/stm32f42/spi.d source/stm32f42/pwr.d source/stm32f42/rcc.d
source/stm32f42/rng.d source/stm32f42/nvic.d
source/stm32f42/mmio.d source/stm32f42/flash.d
source/stm32f42/gpio.d source/stm32f42/ltdc.d source/main.d -o
binary/firmware.o
real 1m14.780s
user 0m53.201s
sys 0m5.704s
time arm-none-eabi-ld binary/firmware.o -Tlinker/linker.ld
--gc-sections -o binary/firmware
real 0m34.636s
user 0m33.120s
sys 0m1.201s
GDC 7.1 With https://github.com/D-Programming-GDC/GDC/pull/507
--------------------------------------------------------------
time arm-none-eabi-gdc -c -O3 -nophoboslib -nostdinc
-nodefaultlibs -nostdlib -fno-emit-moduleinfo -mthumb
-mcpu=cortex-m4 -Isource/runtime -fno-bounds-check
-fno-invariants -fno-in -fno-out -ffunction-sections
-fdata-sections source/gcc/attribute.d source/board/package.d
source/board/ILI9341.d source/board/lcd.d source/board/spi5.d
source/board/statusLED.d source/board/random.d
source/board/ltdc.d source/stm32f42/bus.d source/stm32f42/scb.d
source/stm32f42/trace.d source/stm32f42/dma2d.d
source/stm32f42/spi.d source/stm32f42/pwr.d source/stm32f42/rcc.d
source/stm32f42/rng.d source/stm32f42/nvic.d
source/stm32f42/mmio.d source/stm32f42/flash.d
source/stm32f42/gpio.d source/stm32f42/ltdc.d source/main.d -o
binary/firmware.o
real 0m55.745s
user 0m50.962s
sys 0m2.338s
time arm-none-eabi-ld binary/firmware.o -Tlinker/linker.ld
--gc-sections -o binary/firmware
real 0m33.768s
user 0m33.212s
sys 0m0.503s
PR507 eems to have made a mild improvement.
In an effort to draw a comparison, I modified the code as little
as possible to get it to build with DMD, and this is the result:
--------------------------------------------------
time dmd -m32 -c -conf= -boundscheck=off -release -betterC
-Isource/runtime source/gcc/attribute.d source/board/package.d
source/board/ILI9341.d source/board/lcd.d source/board/spi5.d
source/board/statusLED.d source/board/random.d
source/board/ltdc.d source/stm32f42/bus.d source/stm32f42/scb.d
source/stm32f42/trace.d source/stm32f42/dma2d.d
source/stm32f42/spi.d source/stm32f42/pwr.d source/stm32f42/rcc.d
source/stm32f42/rng.d source/stm32f42/nvic.d
source/stm32f42/mmio.d source/stm32f42/flash.d
source/stm32f42/gpio.d source/stm32f42/ltdc.d source/main.d
-of=binary/firmware.o
real 0m3.086s
user 0m2.569s
sys 0m0.517s
Not sure if that's a valid comparison, but that's a huge
difference.
I'd be glad to do some troubleshooting if you have any ideas.
But I may not get to it right away as I will be traveling for a
few weeks.
Mike
